Dental syringe-obtunder.



T. N. IGLEHART. DENTAL SYRINGE OBTUNDER. APPLICATION FILED AUG. 29,1912.

Patented June 10, 1913.

1N VEN TOR krroRuEY UNITED STATES PATENT OFFICE.

THOMAS NELSON IGLEHABT, OF SAN FRANCISCO, CALIFORNIA.

DENTAL SYBTNGE-OBTUNDER.

Specification of Iietters Patent. Patented June 10, 1913 Applicationfiled August 29, 1912. Serial No. 717,707.

T 0 all whom it may concern: I

- Be it known that I, THOMAS NELSON IGLE- HART, a citizen of the UnitedStates, residing in the city and county of San Francisco and State ofCalifornia, have invented new and useful Improvements in DentalSyringe-Obtunders, of which the following is a specification.

This invention relates to a protective tip to be mounted on the end ofspray nozzles of syringes or like devices.

The object of the invention is to providea soft or flexible tip whichmay be mounted or attached to the discharge end of a spray nozzle orlike device, in such a manner that it will prevent abrasion or injury tothe gums as when the tip..is applied to an oral The device here shownhas been especially designed and constructed for application to oraldental syringes. A syringe of this'nature is'generally used by dentistsfor the purpose of cleansing the teeth and in parti cularly the spacesbetween same.

In operating a syringe it-is almost necessary to bring the spray nozzleoi same in contact with the teeth and gums, which often causes abrasionand injury to the gums. With the purpose in view of el1m1- nating anyunnecessary injury of this nav at A,

true, and also for the purpose of confining the area of the sprayissuing from the nozzle I have constructed a protective tip, theapplication of which is generally indicated soft rubber or like flexiblematerial, and can be brought in direct contact with the teeth and gumswithout causing any abra- Fig. 1. This may be constructed of sion orinjury to same. The preferred form of the tip is shown in Figs. 2 and3.

. The device consists of the main body portion 2, which is adapted toslip over the end of the nozzle 2*, and it further consists of a centralprojection 3 and a funnel-shaped pro ection 4. Fig. 4 shows 'a'slightmodishoulder 5, which will prevent the nozzle from being forced clearthrough the tip.

the teeth, it is only necessary .to apply the tip to the part beingcleansed, the funnel portion of the tip serving to confine and ingsprayed, as for instance the spaces or openings between the teeth. Thecentral projection 3 is provided for the purpose of bringing thedischarge point of the nozzle as close to the part being sprayed aspossible, so as to utilize the greatest force of the wash liquid.

Thetip is neat in appearance, useful, reliable-and eflicient in itsapplication. The

manufacturer may dictate.

I wish it understood that various changes in form, proportion andminor'detai-ls of construction may be resorted to within the scope ofthe appended claim, and that-1' do not wish to limit myself to thespecific design and'construction here shown..

Having thus described my invention, what I claim and desire to secure byLetters Patent, is-' tunder, of a hollow, flexible body portion adaptedto slip over the end of the syringe nozzle, and having a tubular softextension in line with the nozzle, and an exterior divergent cup-shapedportion surrounding the tubular center and extending beyond it.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

THOMAS NELSON IGLEHART.

Witnesses Gno. H. STRONG,

J 01m H. HERRING.

fication of same in whichv the throat of thev funnel is slightlycontracted to form a' In operation, when it is-desired to cleanse directthe spray to the particular part be The combination in a dental syringeob material and finish of the device may be such as experience andjudgment of the

